Online shopping is here to stay. A Staples and Office Depot deal won't end the threat from Amazon.

The opinions expressed in this commentary are solely those of Paul R. La Monica. Other than Time Warner, the parent of CNNMoney, Abbott Laboratories and AbbVie, La Monica does not own positions in any individual stocks.

There is a famous saying about two wrongs not making a right. But what about three wrongs?

Shares of troubled office supply superstore Staples (SPLS) surged more than 8% Tuesday and were up again Wednesday. Why? A Credit Suisse analyst suggested that Staples should buy struggling rival Office Depot (ODP), which was formed from the merger of Office Depot and fellow also-ran OfficeMax.

Really? I'm not sure that combining all the office supply stores into one will create a new giant that can go toe-to-toe with Amazon (AMZN) and other Internet retailers that have been slowly eroding the customer bases of these brick-and-mortar stalwarts.

Staples and Office Depot are much like Best Buy (BBY), RadioShack (RSH) and other specialty retailers that are having a difficult time competing against Amazon. Discounters like Wal-Mart (WMT) are squeezing the big office chains too.

That great run for stocks during the past five years everyone is talking about? Staples and Office Depot have missed it. That's sad.

So investors may want to think twice before buying Staples and Office Depot on merger hopes. It's also worth remembering that we've been here before.

But anyone thinking that Staples and Office Depot will merge might want to reconsider. Doing a deal will take a lot more work than just hitting the Easy Button and conjuring up the Ink Fairy like in those old Staples TV commercials.

The opinions expressed in this commentary are solely those of Paul R. La Monica. Other than Time Warner, the parent of CNNMoney, Abbott Laboratories and AbbVie, La Monica does not own positions in any individual stocks.

Mark Twain allegedly said that you should write what you know. I drink a lot of coffee. So I'm writing today about Keurig Green Mountain (GMCR).

The opinions expressed in this commentary are solely those of Paul R. La Monica. Other than Time Warner, the parent of CNNMoney, Abbott Laboratories and AbbVie, La Monica does not own positions in any individual stocks.

Dear AbbVie CEO Richard Gonzalez,

I am a shareholder of your company. I am pretty happy with how the stock has done since it was spun-off from Abbott Laboratories (ABT) last year. (I own that too.) MORE

The opinions expressed in this commentary are solely those of Paul R. La Monica. Other than Time Warner, the parent of CNNMoney, Abbott Laboratories and AbbVie, La Monica does not own positions in any individual stocks.

Earnings are supposed to matter. But that little bit of Investing 101 may need to be thrown out of the window when it comes to biotech stocks.